Effect of alkoxy side chains on intra and interchain exciton coupling in PPE-PPV copolymers solution

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• 作者：M. Guesmi^a ; ^d ; ^{mariem.guesmi0@gmail.com} ; A. Ben Fredj^a ; S. Romdhane^a ; ^b ; N. Bouguerra^c ; ^d ; D.A.M. Egbe^d ; ^e ; R.W. Lang^e ; M. Havlicek^d ; N.S. Sariciftci^d ; H. Bouchriha^a
• 关键词：Conjugated polymer ; Side chains ; Photoluminescence ; Timeresolved photoluminescence ; Aggregates
• 刊名：Synthetic Metals
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：224
• 期：Complete
• 页码：72-79
• 全文大小：2198 K
• 卷排序：224

文摘

Five derivatives of PPE-PPVs, with symmetrical and dissymmetrical configurations of alkoxy side chains, in solutions, have been used. Photoluminescence (PL) and time-resolved PL measurements have been done. Using Franck-Condon (FC) analysis, we showed the impact of the side chain configuration on the formation of H, J or HJ aggregate domains in solutions. Symmetrical and total dissymmetrical configurations lead to H and J-aggregate domains, respectively. We have shown that the long-lived emission is from H-aggregates while the short-lived emission is from the J-aggregate type.